I have seen Joomla using many types of user access for the admin site. For example user, admin user, registered user and super user. The system actually know what type of user you are once we logged in. I'm trying to do the same thing for my web app. I need any suggestions on how this features can be achieved using PHP.
Assuming a user is in a database, you could have an column like role which would be user, admin, registered, and super.
Then in PHP you can use switch / if-condition blocks based on that role variable.
Related
I'm developing a application with raw PHP. But I have a problem that needs solution. I have two types of user in my application (e.g: Administrator & User).
For administrator, I have following files under "admin" folder,
Admin (Dashboard, Change password, Add User, Profile, User List etc.)
Also for user, I have following files under "account" folder
Account (My account, Change password, Edit Profile etc.)
I want, after login user can't access any files of "admin" folder. Now, after login I check the role first, if use then I redirect him/her to www.example.com/account/my-account.php but, when user hit the following url then he/she can easily access backend functionalities.
www.example.com/admin/dashboard.php, www.example.com/admin/change-password.php, www.example.com/admin/add-user.php, www.example.com/admin/profile.php, www.example.com/admin/user-list.php
Is there any way to close the "admin" folder entrance for user?
TIA
See according to your question you have to assign a role. Though I prefer php frameworks more than a core php but still you could do.
Say you have a form where user and admin shares the same login form for logging purpose.
And you want admin to access all route and restrict few route to the user.
So , the little bit of logic, while you create admin or user you need to assign role as well.
When admin logs in ,according to it, the sql query fetches role and he is routed according to it and same goes with user also.
Set session for user and admin role. And when you enter to target after login the session you have to restrict pages not to acces by user.
I am trying to create roles and permissions functions in php. I have checked some tutorials
A Better Login System
RBAC in PHP
but it is not clear that the permissions are that of the ones granted by mysql or they are improvised in php.
For example if I have roles like admin and user and developer, so should I have to create different users in database and then use those to perform different operations or should I create one root user and then control the access in php. To me it seems like the database should restrict it by having different users.
First clear yourself on roles & permissions. In front end these are different things to provide access to certain pages & changes.
As per your question let me tell you the roles as Admin/User/Developer can be managed by MySQL user rights. MySQL user rights restrict user access on tables, creating tables,deletion and insertion etc. Now if you create different users in database with custom user rights you will have to include different connection credentials for each of the users.
Further in controlling PHP pages restrict user access with user pages assignment by php codes.
If you are really going for custom access management module. I would recommend you to create role table where roles will be placed
table:role
Columns:
id (pk, auto-increment)
role_name (Varchar)
keep 'role_id' in the user table.
you don't need to create a separate table for user_role since each use will have one role.
But if you are planning to have completely page level access.. You would need that table and a UI should be created where you would assign pages (access) to the user while creating a user.
If you are using any framework, do look for the available apis. YII has a very good security feature which access rules and filters are defined.
My tool uses:
PHP for scripting.
mySQL for DB.
Apache for host.
There will be 2 groups of users.
I want to give access to 1 group of users only for 2 webpages.
The other group of users will have the access for all the pages and links.
Is there a way I can hide certain links on a webpage from a certain group of users, too.
How can I achieve this.
Fairly new to programming.
Any help will be greatly appreciated.
Thank you.
Lets say, Admin & normal user.... in that case we will have a column in the user table which will store he/she is admin or not. When you do authentication, fetch this value & keep it in SESSION. So in every page you check this person is admin or not with that session value using if clause.
It's hard to give any fitting exmaples without code, but if you have a MySQL and know some PHP, the basic way of solving this problem would be connecting to the database, checking what group the currently logged in user is (check by ID or however you set things up) and wrapping if statements around the links you want to hide from certain people that check if they belong to the right group to see said pages. You can also hide the pages from them by just putting a check whether they can see the page content or not on top of the content and throwing some sort of no permission error when needed. For this basic example hard-coding the groups into the files should be sufficient. If you plan on expanding all this later on, I'd maybe make a seperate table in your database controlling page view permissions.
You can also include HTML code in your PHP if statements by just closing the PHP section after the if (?>) and put the closing bracket of the if at the end of your HTML menu for the secret group (<?php } ?>).
If you provide us with some code snippets, we can maybe help you a bit more with examples.
There are many ways you could achieve this.
How to 'hide' the page
A good way to really hide the pages would be to check the type of user before displaying anything. If the type of user has access to the requested page, display it. If the user does not have access, you could send a 404 page not found error.
This way, user which does not have access to the page wont even know the page exist even if they have the URL.
Authenticate the user
As mentioned by Akhil Sidharth, you can use a $_SESSION variable to keep the type of the user trying to view the pages.
Every application now a days is using group, permission and capabilities to restrict site/application users from accessing the page/content/link within the site/application. Sometime group might be refereed as role to organize users. Let me describe -
Group/Role - Role might be - Admin, Manager, Employee, Customer etc. Your application should have role management system where you can manage(add/edit/delete) the roles/user-groups. These roles should be stored in DB tables.
Permission - Permission might be Allow, Deny, Restrict etc.
Capabilities - Capabilities might define the list of works/actions/activities that a user can take on your site or on a particular page. Some examples are - a. Can View XY*Z link b. Can View X*B page c. Can create user d. Can assign permission e. Can change permission etc.
Apart from this, your application should have two addtional management page -:
Configure capabilities & permission for the said roles, where you can configure and set capabilities either 'Allow'/'Deny' for the roles.
Role to users - This is the page where you can put the users into a particular role.
In this way you have the idea, what a particular users have rights/permissions to do on the site & restrict the users over accessing the contents/pages/links accordingly.
Alternatively, the simplest way for you now is to add a 'type' field in your user DB table. Add a drop down of users types where you are creating/updating the user & save the user type in your user db table. Restrict the user on the basis of user type accordingly.
HI,
i am writing and designing a website with php.in this site every want can register and admin can go to admin.php for manage the site.but my problem is that every one that type www.example/login/admin.php can access to admin.php.how can i prevent other users that can't access to admin page?
You probably want to look at .htaccess file. Check this link out
You have to do the login page for the admin.php. Only if the people with the correct username and password can see the admin page and do the admin action
How do you define terms like "user" and "admin" and what is the process for creating/registering an account?
Generally, you would associate "users" with "roles" in your database. If a user account is supposed to be an admin, you associate that user record with the admin role. If the user is a standard user, associate them with the standard user role (which may be the default by having no role, though I'm not a big fan of implicit knowledge vs. explicit definitions in software). Users should also be able to have multiple roles, in case you have various classes of "user" and they need to have overlapping privileges.
Then, in the admin section of the site, your code would check if the current logged-in user (however you track that, you didn't specify) is in a given role before rendering the page. If not, then either send the user to another page or display a message, etc.
If every user can access the admin page, then essentially every user is an admin. How do you distinguish one from another in the code or in the data? That's where you need to start.
My RealEstate PHP Application have following user groups,
Admins,
Moderators
Agents
i want to specify following permission to the following users.
Admins - >
Can Create Moderators,
Can Create Agents,
Can Insert Properties,
Can Update Properties,
Can Delete Properties
Hence an Admin will have all the privileges in short an Admin here will be superAdmin
I want to assign limited privileges to the moderator and hence to the agents.
i am confused on how to Create a Database for this and also on how to implement it in my PHP Application.
thank you
It sounds like you are going to need a role-based access control system. Developing one is not
really a trivial task, so as already suggested, finding a framework or ready-made class that does
the job would be a worth while start.
Role Based Access Control
http://www.tonymarston.net/php-mysql/role-based-access-control.html
http://www.sqlrecipes.com/database_design/fine_grained_role_based_access_control_rbac_system-3/
http://www.sitepoint.com/forums/showthread.php?threadid=162027
You should create a table wher you have to define all type of role.
and one table for users
relate different roles to different user Via linking two tables.
and some thing like this ......
The way that I have done this in the past was to create a users table in the database that had an access level (Admin, Moderator, and agents).
Then if you have a menu system, implement a check to see what privileges are needed for what links... Admins will see all links, Moderator will only see links he/she is supposed to, and agents will only see what they are supposed to see.
Also on the pages that you may want to restrict users you will want to check for the users access level. If they pass, they will see the page, if not, they will be redirected or a javascript error will need to pop up.
Something like the access level may do you some good to store it in a cookie as you can cut down your calls to your database.
Hope this helps,
Mike